Nov 8 (Reuters) - Meta Platforms Inc (META.O) will begin laying off employees on Wednesday morning, Chief Executive Mark Zuckerberg told hundreds of executives on Tuesday, the Wall Street Journal reported.Zuckerberg appeared downcast in Tuesday's meeting and said he was accountable for the company's missteps and his overoptimism about growth had led to overstaffing, the report added, citing people familiar with the matter.The specific employees losing their jobs will be informed over the course of the morning, the report said.The development comes after Twitter laid off half its workforce across teams ranging from communications and content curation to product and engineering following Elon Musk's $44 billion takeover.However, Bloomberg on Sunday reported Twitter was reaching out to dozens of employees who lost their jobs, asking them to return."